Lighter foe



Sept. 7, 1926. 1,598,854

C. DRESSELHUYS LIGHTER FOR OIL BURNERS Filed May 8, 1924 Patented Sept. 7, 1926.

warren STATES isaassr PATENT OFFICE.

CLARENCE DRESSELHUYS, OF ABERDEEN, SOUTH DAKOTA.

LIGHTER FOE Application filed May 8,

'i nection.

i in. 2 is a sectional elevation as seen substantially on the line 2-42 in Fig. 1.

Fig. 3 is an enlarged section on the line 3--3 in Fig. 2. r

Fig. is an enlarged section on the line i-et in Fig. 2.

Referring to the drawing more particularly and by reference characters 5 designates a fire box or combustion chamber which is preferably lined with fire brick 6. The combustion chamber is placed in the ash chamber of the ordinary coal furnace (not shown), so that the intense heat from the burner will be distributed upwardly throughout the furnace in practically the same manner as when coal is burned.

A complete oil burner is not shown, as the present invention may be used with many types and kinds of burners. A portion of a common construction of burner is indicated, however, as at 7, and consists of a burner nozzle which is directed into the combustion chamber where the ignition takes place.

The pilot light or lighter also projects into the combustion chamber, preferably at a point below the nozzle, and consists, primarily, of three concentrically spaced members S, 9 and 10. The member 8 is an angu-- lar extension of a feed pipe 11, which communicates with a main fuel supply pipe 12 through valves 13, 1 1 and 15, and suitable connections. A trap 17 is provided between the pipe 12 and the valve 13, to catch as much dirt, water and foreign matter in the oil as possible, before it reaches the valves. An open air inlet pipe 17 is provided between the valve and the pipe 11. -The valve 13 is preferably a needle valve which can readily be adjusted so that the proper amount of fuel may be fed to the lighter. The valve 1 1 is not designed to control the OIL BURNEBS.

1924. erial No. 711,783.

passage from the valve 13 to the valve 15, but opens and closes a drip nipple 1S; and the valve 15 is an ordinary globe or cut off valve. Now when the pilot is to be lighted the valve 15 is closed and the valve 1 is opened. The needle valve 13 is gradually opened until the oil or fuel starts to drip from the nipple 18. WVhen the valve 13 has been opened far enough, as indicated by the frequency of the dripping, as desired, the valve 14-. is closed and the valve 15 is opened, thus directing the oil from the valve 13 directly into the lighter spout 8. The member 10 is a cylindrical casing having a plate 19 at one end which secures it to the front end of the combustion chamber. The memher 9 is a tubular sleeve which is annularly spaced within the casing 10 by integral lugs 20 and 2.1 so that an air space, open at both ends, is provided between the members 9 and 10. A similar but smaller air space is provided between the members 8 and 9 and is affected by radial set screws 22 which concentrically retain the pipe 8 in the sleeve 9.

The main object of the members 9 and 10 is to protect the pilot tube 8 from the intense heat, from the main burner, which is created within the combustion chamber. A second object is to provide the aforesaid mentioned air space open at both ends, so that when the burner is operating the chimney draft will cause a strong suction of the cooler air to be created between the members 8, 9 and 10, and thus give additional cooling protection. lVhen the main burner is either manually or thermostatically rendered inactive, the pilot light will of course continue to burn, and like all burners and lighters will, to a certain extent, form some carbon at its end. With many pilot lights this carbonization is found to be very objectionable and frequently even renders the pilot useless. In the present construction, however, where the pilot may be projected directly into the intense heat of the burner, it is found that, as soon as the burner again becomes active the carbon deposit on the pilot quickly burns away. This is partly due also to the fact that the pilot gas is not entirely generated at the tip of the tube 8, i. e., the oil is not mixed with the air at this point. A considerably large amount of air, required for the combustion of the oil, is introduced through the port 17 thus permitting the vaporization and mixing to take place while the oil is passing of air to be conducted to the outer side of the casing, and have a tendency of reducing or minimizingsoot or carbon deposits upon the outer surface of this member.

It is understood that Various suitable modifications may be made in the general. I design and structural details of the invention as herein illustrated and described, provided, however, that such "modifications come within the spirit and scope of the appended claims. I

Having now therefore fully set forth my invention, what I claim to be new and desire to protect by United States Letters Patent is: i

1. A pilot light of the character described consisting of a jet projecting into a combustion chamber having a main burner, and annularly spacedmembers arranged within the combustion chamber about the jet to protect it from the flame from said burner, the spaces between said jet and members being substantially open at both ends to permit a circulation of air therethrough.

2. The combination with a combustion chamber adapted to be heated by a main burner, of a pilot tube extending thereinto, and adapted to be supplied with liquid fuel, means for introducing air into said tube at the outside of the combustion chamber, and a protector secured Within the combustion chamber and about the inner end of the tube to protect it against heat from the burner.

3. The combination with a combustion chamber adapted to be heated by a main burner, of a pilot tube extending thereinto and adapted to be supplied with liquid fuel, means for introducing air into, said tube at the outside of the combustion chamber, and a cylindrical member arranged concentrically about the inner end of the tube to confine a circulation of cool air thereabout, the inner end of the .pilot tube being substantially flush with the inner end of the cylindrical member.

4. The combination with a combustion chamber adapted tobe heated by a main burner, of a pilot tube extending thereinto and adapted to be supplied with liquid fuel,

means for introducing air into said tube at 

